Fbiedeich wilhblm mullbe



6 F. w. MULLER.

PRBSSBR FOOT FOR SEWING MACHINES. No. 346,601. Patented Aug. 3, 1886.

front view of the same.

UNITED STATES PATENT OFFICE.

FRIEDRICH \VILHELM MBLLER, OF BERLIN, GERMANY.

PRESSER-FOOT FOR SEWING-MACHINES.

SPECIFICATION forming part ofLetters Patent No. 346,601, dated August 3,1883.

Application filed January 20, 1886. Serial No. 189,153. (No model.)

To all whom, it may concern.-

Be it known that I, FRIEDRICH WILHELM MULLER, a subject-of the King ofPrussia, residing at Berlin, in the Kingdom of Prussia, German Empire,have invented new and useful Improvements in Sewing Machines, of whichthe following is a specification.

' This invention relates to a new manner of fastening the presser-footof a sewing-machine to the head of the presser-bar, so that thepresser-foot may be rapidly and easily removed or replaced.

The invention consists in the elements of construction hereinafter morefully pointed out.

In the accompanying drawings, Figure 1 is a side elevation of apresser-foot and presserfoot bar embodying my invention. Fig. 2is a Fig.3 is a cross-section on line at m, Fig. 1. Fig. 4is a face view, andFig. 5 a side view, of the presser-foot.

The letter (t represents a presser-foot having the usual hook-shapedform, and provided with a notched shank, e. The presser-bar A U issurrounded near its lower end by a clasp or head, B, having one fixedjaw, B.

b is the movable jaw of head B, pivoted thereto by pivot c, The jaw bhas a rearward extension, 1), against which the end of a setshank.

screw, (1, is made to bear. This screw is fitted into a correspondingopening in head B.

D is a set-screw for attaching head B to bar A.

To introduce the presser-foot into the head, the jaw 12 is first opened,and then the shank e is slipped between the jaws. Next the setscrew d isturned up, so that thejaw b enters and bears against the notched part ofthe To remove the presser-foot, the screw (1 is turned back, and thenthe presser-foot falls out of the head.

I claim as my invention- 1. The combination of bar A and head B, havingfixed jaw B, with pivoted jaw I), having rearward extension I), and withthe set-- screws (1 D, substantially as specified.

2. The combination of bar A and head B, having a fixed and a movablejaw, with presser-foot at, having notched shank c, substantially as andfor the purpose specified.

In testimony whereof I have signed my name to thisspecification in thepresence of two subscribing witnesses.

FRIEDRICH WILHELM MULLER.

Witnesses:

O. WIoHMANN, B. RM.

